I will explain TNS_ADMIN Environment Variable in Oracle in this post.   TNS_ADMIN in Oracle TNS_ADMIN environment variable is very important in Oracle software that points to the directory where SQL*Net files like tnsnames.ora, sqlnet.ora and listener.ora. TNS_ADMIN points to the $ORACLE_HOME/network/admin in Linux/Unix and %ORACLE HOME%\network\admin directory in Windows environment.   You can set … Continue reading TNS_ADMIN Environment Variable in Oracle